William g



April 13 1926. Re. 15,319 y W. G. WILSON HANDHOLE EMERGENCY CAP Original Filed Dec. 3l. 1923 l Reissued Apr. 13, 1926.

UNITED STATES PATENT OFFICE.

WILLIAM G. WILSON,

H AN'DHOLE EHEBGENCY CAP.V

origini E. 1,526,263, j for reissue led lay 11,

The principal object of the invention is the provision of a safety cap which may be easily. applied to the boiler or tank to seal the hand hole without necessitatingthe '15 removal .of the contents of the boiler or VAnother object ofthe invention isY to* vide a hand hole cap which may be app ie.' Y, to a boiler without the fear of being bui-ned or scalded by esca ing steam or water;

With these an other objects iii View, the invention resides in certain novel constructionland combination and arrangement of parts, the essential features of which are hereinafer fully described, are particularly pointed out in the appended claims and are illustrated in the accompanying drawing` in which: Figure 1 is a front view of my invention applied over a hand hole opening in a boiler; A

Fi ure 2 is a vertical sectional view on theline 2-2 of Figure 1.

Figure 3 is a detail perspective View ofun the partsseparated.l

It sometimes occurs that a leaking hand hole asket is discovered prior to the sailing a shipwhich at pull the fire and empty the boiler containing water or steam, and wait until the same is suicientlyvcool before repairing the leak This often delays sailing of ships which is costly in both time 'and money and it is therefore my intention to provide a cap which may be applied over the hand hole on late to stop the leak and which cap can Ee applied while the boilers are filled with -their contents. Whereas, I-have mentioned one instance in which m invention may be used, it is to be understoood that the same might be used in connection withhand holes for all types and shapes of boilers, or if desired upon man-holes.

GQ' Wilson',

present requires that the exterior of the boilerI oEWEs'r NEW BRIGHTON, NEW Yoan, lAssreNoisi. 'ro E. G.

DANIELs, or NEW Yonx, N. Y. i

dated February 1o, 192s, seriali No. asssoa, inea December 31, 1923. Application 192s. seriai No. 2a,s4o.

Referring maore particularly to the drawing, the reference numerallO designates a hand hole plate of a boiler or tank and has formed therein the usual hand hole opening 11. Theopening 11 is closed from thel inner side of the boiler by nieansof a head 12, and a gasket 13 is interposed between the head and the plate 10 to prevent leakage at this particular joint. The head 12 supports a bolt 14 which extends througlithe opening 11 and projects a considerable distance on the outside of the plate and has its free end screw threaded as at 15. A crows-foot 16 having a bore 17 therein is insei'table on :the bolt and abuts the outside of the plate l10 when in position as shown in Figure -2 of the drawing,

opening 1l by means of a member 18 which is provided with in internal threaded bore 19 for coaction witlithe threads v15 on the bolt.l The member is adapted to be forced against the crows-foot to hold the same in clamping engagement with the plate and to likewise bring the head 12 in sealing engagement With'th'e plate whereby a tight joint is produced between the head and the plate to seal the opening 11. In the'event that the joint between the head and the plate were to spring a leak, a capv 2() is provided wliich is `of a cup formation.` The cap 20 has its peripheraledge formed'witli a dove-tail 22, having a similar shaped'portiofn 23 for co-action with the groove 21. 'The member 18 is formed with aV nut surface 24 and an externally screw threaded portion 25 over which the cap 20 is'passed, the cap having Va smooth bore 26 yof a diameter the portion 25 of the member.k When the cap is moved to' its position on the bolt so as to bring a washer 27 is passed over the rmember and brought against the cap 20. The washer 27 is formed with a embedded in the washer in the same manner as the gasket 22 of the cap. rlhis is to prevent'leakage through the bore 26, and a nut 30-l-co-acts with the threads 25 and is brought jamb against the hold the cap in sealing engagement with the outside of a plate. The end of the bolt 14 is tapered as at 31, whereby `the nut may be easily guided when applying the, same.

TheA 'crows-foot 16 is h ld against theziplate adjacent the groove 21 which Areceives a gasket z to kreceive* the `gasket against the plate,

gasket 28 whichv is washer so as to- 1 such projecting part witho t d erator while the cap .ment thereof, it may man.

ports and means'for attachi A thecapto i ngsturbingthe latter. Y 6.y A steam-tight emergency cap adapted tovbe set on the outside of a boiler, or other chamber, over fixed supports fora hand-hole head, to stop a leak through the hand-hole, means for securing the cap in place While said supports remain undisturbed, and means on the cap to receive a rod, whereby lthe operator, at a safe distanceA from the hand-hole, may set the cap in place.

7; A steam-tight emergency cap adapted torbe set on the outside cfa boiler or other chamber, over `fixed supports -or a handhole head, to stop a leak through the handhole, means for securing the cap in place while said supports remain undisturbed, and a cock at an angle on the cap for directing escaping steam or gas away from the opis being positioned.

8. An emergency cap for leaky hand-hole heads, or the like, in boiler or other plates, in the form of a cup adapted to be inverted over the ixed supports for the hand-hole head, and to be set With its rim to the plate, said cup being apertured so that, in placebe slipped over and receive a projecting part of such fixed supports, and means for attaching the cap to such projecting art without disturbing the latter, said cup icing adapted to form with the boiler plate a steam-tight chamber for any fluid which may pass the head after the emergency cap is secured in place.

9. A steam-tight emergency cap adapted to be set on the outside of a boiler or other 'chamber over a crows foot' and bolt for a hand-hole head.; the cap being bowl-.shaped to receive the crows foot and having an opening for axial registration with the bolt,

' and means connectible to the bolt from the outside of the cap for locking the cap in place and for sealing the opening against the escape of steam from the interior of the cap; temporarily to stop a leak, Without disturbing or loosening the crows foot or bolt which are holding the hand-hole head.

10. In a device of the character described, a plate having a hand-hole opening therein; means for sealing this opening, including a head on the inside of the plate, a croWs-oot or the like set against the outside of the plate over the opening, a bolt connecting the head to the crows-foot through the opening and having a tapered or conical extension pointed outward from the plate; an emergency cap in the form of. a cup inverted over the croWs-foot Wlth its rim set against the plate and forming a steam-tight joint with the latter, the cap an opemng to receive the tapered the bolt and to be thereby camosition, and means confrom the outside of the havin extension o med vto centered nectible to the bo t,

chamber, over fixed supports for a hand-hole l head, to stop a leak through the hand-hole, means orsecuring the cap in place while said supports remain undisturbed, and a threaded boss on the cap to receive a rod whereby the operator, at a safe distance from the hand-hole, may set the cap; in place. Y

12. A steam-tight emergency cap adapted to be set on the outside of a boiler or other chamber, over fixed supports for a handhole head, to stop aleak through the hand hole, means for securing the cap in place vwhile said supports remain undisturbed, and a valve for relieving the pressure of steam against the cap While the cap is being set and secured.V

13. In a device of the class described, the combination with a plate having a hand hole Iopening therein, meansr for sealing said opening from the inside of said plate,rincluding a head, a asket interposed between said head and sait? plate, a bolt extending from said head and through said opening, a crow-foot, a member threaded on said bolt and contactin with said crow-foot to hold the same and said head in clamping engagement with said plate, a cap slidable lover said member, and means co-acting with said member for forcing said cap in sealing engagement with the exterior of Said plate Without disturbing the adjustment of said member.

14. In a means for sealing the hand holt opening of a boiler plate including a head on the inside of the plate; means connected to the head to act as a brace for the head against the youtside of the plate; a steamtight emergency cap outside of the plate over the brace, and securable in place While the brace, and connections therefrom to the head, remain unplaceable against the v disturbed, for temporarily stopping a leak 16. A steam-tight emergency cap adapted to be set on the outside of a boiler or other renne chamber, over xed supper-fs yfor abend-hole head,

. into th and having a gasket set e same fer contact with the heated boiler-plate, for sealngfthe jon-t'between the eng and the boiler-plate,

and for -prevening ion ef the cap to the boiler-plate. 17. In a means for sealing the hand-hole opening of a boiler, ftom said head and a head, a bolt extending through said opening, a

crow-foot on said bolt, a member threaded Piate 0n said bolt, for forcing vsaid crow-fooil and head inte clamping engagement with said an external threaded portion formed peripheraly vsaid means having a en said member, in combination with la eap adaped to be appIi-edover fthe outside of Said hand hole opening upon the leaking of smooth 'bore therein insertable over said member, 'a washer having a gasket thereon for coactionwith said cap, 'and a nut for (zo-action with the threads on said member vfor holdingthe cap in sealing engagement with the plate and the washer in sealingengagement with vsaid cap.

WLLIAM VWILSON 

